Global Patent Index - EP 2713653 A1

EP 2713653 A1 20140402 - User plane handover for heterogeneous networks

Title (en)

User plane handover for heterogeneous networks

Title (de)

Benutzerebenenübergabe für heterogene Netzwerke

Title (fr)

Transfert de plan d'utilisateur pour réseaux hétérogènes

Publication

EP 2713653 A1 20140402 (EN)

Application

EP 12306190 A 20120928

Priority

EP 12306190 A 20120928

Abstract (en)

A method to handover a user equipment (2) from a first base station (1) to a second base station (5), said first base station (1) being connected to a mobility management entity for the control plane and to a serving gateway for the user plane and providing a user plane radio protocol stack (3) per radio access bearer and a control plane radio protocol stack (4) to the user equipment (2), said second base station (5) controlling a cell overlaid by a cell under control of the first base station (1) and connected to the mobility management entity for the control plane and to the serving gateway for the user plane, said method comprising the following steps - relocating the user plane (3) radio protocol stack to the said second base station (5) for at least a radio access bearer so that the corresponding user plane traffic is delivered to the user equipment (2) through the user plane radio protocol stack (3) of the said second base station; - reconfiguration of the user equipment (2) via a radio resource control connection according to the relocation so that the UE sends the user plane uplink data of the radio access bearer to the second base station only and the control plane uplink data to the first base station only; - performing a user plane switch of the at least radio access bearer towards the serving gateway through the mobility management entity to update the user plane (3) from the second base station and keep unchanged the control plane (4) from the first base station towards the mobility management entity.

IPC 8 full level

H04W 36/04 (2009.01)

CPC (source: CN EP US)

H04W 8/02 (2013.01 - US); H04W 36/04 (2013.01 - CN EP US); H04W 64/003 (2013.01 - US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2713653 A1 20140402; CN 104685929 A 20150603; JP 2015530840 A 20151015; KR 20150052145 A 20150513; US 2015282024 A1 20151001; WO 2014048676 A1 20140403; WO 2014048676 A8 20150205

DOCDB simple family (application)

EP 12306190 A 20120928; CN 201380050802 A 20130830; EP 2013067993 W 20130830; JP 2015533506 A 20130830; KR 20157007931 A 20130830; US 201314431559 A 20130830